public class Example3_7 {
  public static void main (String args[]) {
    int sum=0,i,j;
    for ( i=1;i<=10;i++) {
      if(i%2==0) {
        continue;
      }
      sum=sum+i;
    }
    System.out.println("sum="+sum);
    for(j=2;j<=5212;j++){
      for(i=2;i<=j/2;i++) {
        if(j%i==0)
          break;
      }
      if(i>j/2) {
        System.out.println(""+j+"是素数");
      }
    }
  }
}
